Dog ramp



FIG. 1 is a front perspective view of a dog ramp, showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed broken lines depict portions of the dog ramp that form no part of the claim. 

CLAIM The ornamental design for a dog ramp, as shown and described. 